What spark plug socket size should you use?
And what type of spark plug socket is the best?
In this article, we’ll help you find the right spark plug socket size for your car. We’ll also examine the types of spark plug sockets and answer a few related questions.
Let’s begin!
A spark plug socket is the right tool for handling spark plugs.
It’s specifically designed to handle an old plug (or new plug in case of replacement) without damaging any spark plug wires or threads.
You can usually invest in socket sets that contain the common size for spark plug sockets as well as other interchangeable sizes (so you always have the correct size at hand).
If not, spark plug sockets are individually available in different size varieties to match the spark plug, the most common size being the 5/8 inch size socket. Another common size is the 13/16 inch size socket.
Here are some typical spark plug socket sizes:
You’ll need to pick a relevant spark plug socket depending on the size of your spark plug.
Also, keep in mind the thread size of your spark plug threads. Spark plugs are available in two thread size options for motorcycles — 1/2 and 3/4 inches. For other vehicles, spark plug threads are also available in thread sizes like 8, 10, 12, 14, and 18 mm.
So, make sure your new spark plug has similar threads as the old one because if you use the wrong thread size, your engine will be prone to misfires and carbon fouling.
Next, let’s look at the different types of socket sets available in the market.
Spark plug sockets are available in various extensions and interchangeable sizes. But their core component is usually manufactured in two styles.
They are:
A magnetic spark plug socket consists of a small magnet inside a thin wall of the deep socket.
This magnet will attach to the spark plug tip and prevent it from falling off whenever you remove a spark plug. This way, you don’t misplace your spark plugs during the process of removing them from your engine.
As the name suggests, a rubber grommet socket contains a rubber insert in the deep end of the spark plug socket.
This is to secure the spark plug tip in place when removing an old plug. It prevents any bends or scratches and keeps the plug tips safe.
Now that we’ve gotten the basics on spark plug socket sizes and types, let’s look at some other related queries on spark plugs, and their answers.
Here’s what you should know about spark plug sockets:
A spark plug socket is very similar to a standard socket, except that it may also have a swivel extension bar to reach the spark plug hole without damaging other wires.
Like most other sockets, these are available in interchangeable sizes and can be attached to a torque wrench for better torque. However, spark plug sockets can handle more delicate repairs without damaging the equipment they’re working with.
Some spark plugs are equipped with a magnet or a rubber grommet inside the socket.
Spark plug sockets have a very similar function to that of a standard deep socket — to tighten or loosen a piece of equipment.
To work, spark plug sockets attach to a turning tool with a square drive socket. They sometimes also have a hex or bi-hex head.
In short, you just fit the spark plug tip inside the socket head and then twist to loosen the spark plugs.
The spark plug socket will work differently depending on the type of socket you’re using — whether it’s magnetic or has a rubber insert.
Yes and no.
While a regular socket should do the job well too, a special socket is often the right tool for the job.
Modern car engines have a very complicated spark plug placement. Some spark plugs are placed deep inside the engine, surrounded by spark plug threads and wires.
A regular socket can easily handle a basic spark plug replacement. But you’ll need the right socket size with swivel handles to reach the spark plugs without damaging the wires during changing.
A universal joint socket may also do the job. Plus, a magnetic or rubber insert universal joint socket can better handle a new plug than regular socket sets.
If you’re unsure, it’s best to take professional advice on the tools you should be using for your car.
Here’s how you can use a universal joint or a regular socket to remove spark plugs:
Note: When installing a new plug, you need to follow the same procedure and add dielectric grease on the spark boot. Dielectric grease prevents the new plug from sticking to the boot. Next, adjust the torque on the socket wrench according to the recommended torque spec, and you should be done!
